Spraying machine



Dec. 27, 1927. 3,6549059 G. A. URBACH SPM-ING MACHINE Filed Nov. 2, 1921 2 Sheeisheet 1 l mee ATTORNEY Patented Dee. 27, 1927.

UNITED STATES GUSTAVE A. URBACH, OF PITTSBURGH, PENNSYLVANIA.

BPRAYING MACHINE.

Application filed November2, 1921.

My invention relates to sprayin machines and particularly to atomizing evices for applying paint.

One Object of my invention is to provide a spraying machine thatJ shall have a relaitjively light-weight removable handle mem- Another object of my invention is to provide a spraying machine that shall be con structed as a unit to be received by the handle member. y

Another objecto my invention is'to provide a spray-head for a4 machine` of the above-indicated character, that shall be removable as a unit and that may be disposed in any desirable relation with respect to the machine.

Another object of my invention is to provide a spray-head that may be adapted for projecting any desired shape of spray.

Another object of my invention is to provide a simple method of controlling the spraying machine.

A further object of my invention is to 2.5 provide a spraying machine. of the aboveindicated character, that shall be simple and inexpensive to construct, easily adjusted and effective in its operation.

In practicing my invention, I provide a relatively light, two-part hollow shell having a barrel portion and a stock or handle grip portion. A unitary device comprising a paint valve. an air valve. a sprav-head and a trigger arepartially enclosedin the shell and constitute therewith al complete spraying machine. y

Fig. 1 of the accompanying drawings is a side elevational view of a spraying machine embodyingmy invention;

Fig. 2 is aside view. partially -in section and partially in elevation, of the spraying machine shown in Fig. 1;

Fig. 3 is a view of the end of the machine taken along the line III- III of Fig. 2;

4 h Fg. 4 is a front view of one form of sprayea f Fig. 5 is a front view of another .form of spray-head;

Fig. 6 is arrear view of the spray-head shown in Fig. 5;

Fig. 7 is a detail view' of the painteconducting portion of the spray-head shown in 5 and 6; Fig. 8 is a longitudinal section of the spray head and paint valve: and Figs. u 9 and 10 areside and end elevational views of the paint valve actuating the lever.

Serial No. 512,186.

A sprayingmachine 1, embodying my inventlon, comprises, in general, a two-part shell 2, a spray-head 3 and -a unitary valve mechanism The two-part shell 2 has a barrel portion 5 and a handle grip portion 6, which is so sha ed as to be convenient for holding and which shall be constructed of a relatively l1ght-tveight material to decrease the total Weight of the device and thereby render it more suitable for operation. The shell member 2 may be die-cast, if preferred, and is well balanced to facilitate holding.

The valve mechanism 4, to which the sprayhead 3 may be readily connected by a. sleeve connector 7, comprising an air valve 8, a paint valve 9 and an actuating device 10 for the reciprocation ofniembers 11 and 12 thereof, respectively. The actuating device 10 comprises a trigger 13 that is pivotally mounted on a screw 14. which also assists in holding the two parts of the shell 2 together.

A lever arm 15 is also pivotally mounted on a screw 16 and the lever arm 15 and the trigger 13 -are connected together by a pin 17 in trigger 13 passing through a slotted opening 17 of lever 15 to render the latterl movable aboit its pivot 16 when the trigger is actuatc vThe air valve 8 comprises, a cylinder 18 having a partition intermediate the ends thereof. An inlet pipe 19 `and an outlet pipe 20.are respectively connected to the cylinder 18 as shown. The member 11 of the valve 8 is adapted to be engaged by the trigger 13 and it, in turn. actuates a valve stem 21 which is. normally biased by a spring 22 to the closed posit-ion. With this arrangement,

the air valve 8 is'opened only when the trigger is depressed.

hose connection23 is secured to the end of the pipe 19 by a sleeve connector 24.

A cylinder 25 is provided with a cylindrical member 26 extending radially therethrough which has a tube 27 communicating l position in thelshells 2. A spring 32'surrounds the member 12 and acts Vagainst a washer 33 that is pinned to themember 12.

The member 12 is normally actuated by the spring 32 to its closed position. The outer end of the member 12 is screw-threaded to receive two knurled-head nuts 34 and 35 for adjusting the movement of the member 12 and for precluding its movement when desired. .f

The cyl/inder26 has ascreiv plug 36 in its upper end and a hose connection 37 at its lower end. The hose connection is provided With a sleeve coupling 37a to permit its easy disconnection. The plug 36 is provided to facilitate cleaning the paint valve 9. The cylinder 27 has an oil port 38 for purposes of applying lubricants.

The cylinder 25 has a groove 39 at one end for positioning the same in the shell 2 and with screw threads 40 at the other end to receive the sleeve connector 7 for securing the spray-head 3 sthereto. f

The shells 2 have seats 50, 51 and 52 therein to receive the air valve 8, the spring seat 31, and the lower end of the intake pipe 19, respectively. It will be noted that the valve 8 extends entirely through the shells 2 and is. provided with screw plugs 41 and 42 at `the ends thereof to facilitate assembly and cleaning.` n

Since the paint connection is adjacent the spray-head, 1t Will be seen that the paint passage is substantially a minimum length and that itis so accessible as to be readily cleanable. v

The trigger 13, when depressed, causes the lever arm 15 to move in the same direction with a slight lan' in its operation. This permits a blastof air to be forced through the -spray-head before the paint lvalve is opened. It will be understood that, by the simple operating mechanism, this slight lag isobtained and no complicated linkage mechanism is necessary. f

The spray-head 3, which is adapted to it flush With the outer end 30 of the cylinder v 25, comprises a conical-shaped hollow memf ber having an opening 43 at its outer end. The opening 43`may be of any desired shape, such as oblong, as shown in Fig. 5, or annular, as shown in Fig. 4, according to the shape of the spray desired. The head 3 has an internal shoulder 44 therein, against which a removable member 45 normally rests. The member 45 comprises a. tubular member, the inner end of which is for dispos1t1o adjacent and in axial alinement with the tube 28 andthe outer end 46 of which is so disposed in the opening 43 as to provide a concentric opening therearound whereby the air .from the opening29 may be discharged around the paint opening 46 and thereby, by creating a suction, cause the paint to be discharged. Fins 48 surround the member 45 and have tight frictional engagement with the inner surface of the spray-head.'

Since the spray-head is placed in operative position by merely placing it in any desired angular position adjacent the outer end of the cylinder 25 and adjusting the sleeve connector 7, it is possible to easily assemble a spray-head having other than circular orifices.

A plurality of screws 47 are provided for holding the shells together.

The nuts 34 and 35, When moved to the extreme outer end of their travel, preclude thel opening of' the paint valve when the trigger is depressed, as the forked end of the lever docs not engage the nuts and, consequently, the spring 32 maintains the valve stem 12 in its closed position. Under this condition, when the trigger is depressed a blast of air only is delivered.

The main features of my invention are its lightness, simplicity of the operating mechanism and its unitary parts which render it very simple to assemble. By reason of the fact that the member 45 frictionally is held in place in the spray-head, it is essentially a unitary device and may be connected to the spraying machine by a simple sleeve coupling or connector 7. My inventionl is not limited to any particlar form of spray-head, as m new combination permits any desired orm being used. I further do not limit my invention to the structural features shown, as man changes may be made therein Without departing from the spirit and scope of the same, as set forth in the appended claims.

I claim as my invention:

1. A paint valve for a spraying device comprising a cylindrical member, a pipe connection at one end, a closure screw at the other end and a valve stem passing laterally 4through one side of the cylindrical member and seated in an opening in the other side thereof.

2. A valve device for a spraying machine comprising a cylindrical member having alined relatively small' openings in both ends, a second cylindrical member disposed transversely through the other cylindrical member, a closure for one end of the second cylll Leis-noaa lindrical member, and a hose connection on the other end thereof, a Valve stem 'disposed longitudinally in the irst cylindrical member through one opening therein and seated in one side of the Second cylindrical member, the other opening in the first cylindrical member being the valve outlet, and means for securing a. spray-head adjacent the last openlng.

Ll. spraying machine comprising a cyliir drical member having a substantially plane end with an axial opening and a non-centrally disposed opening therein, a conical 1nember having a central portion for registering `with the axial opening, a concentric opening disposed entirely around the central portion in communication with the non-centrally disposed opening, and a union for connecting the conical member to ythe cylindrical member Without relative rotation thereof.

5. A spraying machine comprising a. cylindrical member having a substantially plane outer end with a plurality of openings therein, a conical member having a central portion extending through an opening in the outer end thereof,k and means for securing the conical member to the plane outer end of the cylindrical member without relative movement thereof.

6. A spra ing machine comprising a cylindrical mem er having a substantially plane outer en'd with a plurality of openings therein, a conical member having a central portion extending through an opening in the outer end thereof, and a union for securing the conical member to the outer end oi' the cylindrical member.

7. A spraying machine comprising a cylindrical member having a substantially plane outer end with a plurality ont openings therein, a conical member having a central portion extending through an opening in the outer end thereof, and a union for securing the conical member in any desired relation to the outer end of the cylindrical member.

In testimony whereof, l have hereunto subscribed my name this 17th day of Oct., 192i...

GUSTAVE A. URBAGH. 

